Re : Re : Re : Re : Re : Re : Re : Re : Re : Re: Patches for VGA-Passthrough XEN 4.2 unstable

From: David TECHER <davidtecher@yahoo.fr>
To: xen-devel@lists.xensource.com
Subject: Re : Re : Re : Re : Re : Re : Re : Re : Re : Re: Patches for VGA-Passthrough XEN 4.2 unstable
Date: Tue, 6 Dec 2011 14:28:39 -0800 (PST)	[thread overview]
Message-ID: <1323210509.34541.YahooMailNeo@web29813.mail.ird.yahoo.com> (raw)
In-Reply-To: <201112061619.56224.tobias.geiger@vido.info>

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Tobias,

When I restart my domU, my domU freezes (the boot screen of Windows XP is frozen with blue progression bar). Only my dom0 is available.

David.

________________________________
 De : Tobias Geiger [via Xen] <ml-node+s1045712n5052398h36@n5.nabble.com>
À : David TECHER <davidtecher@yahoo.fr> 
Envoyé le : Mardi 6 Décembre 2011 16h21
Objet : Re: Re : Re : Re : Re : Re : Re : Re : Re : Re: Patches for VGA-Passthrough XEN 4.2 unstable

Hello, 

glad to hear it works for you! 

As i run a similar setup, perhaps you can share your experience regarding 
DomU-Reboot with a VGA Card passed through to it: Does a reboot work, i.e. 
does the passed-through VGA Card work after a DomU reboot? 

My hole System (DomU + Dom0) freezes after a reboot of DomU (exaclty then, 
when the passed-through VGA Card is accessed...), therefore the question. 

Thanks for your info! 
Greetings 
Tobias 

Am Dienstag, 6. Dezember 2011, 14:57:30 schrieb David TECHER: 

> Hi 
> 
> Thanks for these informations. I am on Debian. So it could be usefull for 
> Ubuntu users. 
> 
> Thanks. 
> 
> David 
> 
> 
> 
> ________________________________ 
>  De : n4rC0t1C <[hidden email]> 
> À : [hidden email] 
> Envoyé le : Mardi 6 Décembre 2011 13h04 
> Objet : Re: [Xen-devel] Re : Re : Re : Re : Re : Re : Re : Re: Patches for 
> VGA-Passthrough XEN 4.2 unstable 
> 
> Iep I used your last patches, (your website it's at the top of my 
> bookmarks), and they apply to xen-unstable rev. 24341 as well (which i'm 
> using). 
> 
> I forgot to mention that I had to make a couple of fix to xen tree, cause 
> it wasn't compiling on my system due to  "error: format not a string 
> literal and no format arguments": 
> 
> 
> --- /usr/src/xen-unstable.hg-rev-24341-460gtx/tools/libxl/libxl_create.c 
> +++ /usr/src/xen-unstable.hg-rev-24341-460gtx/tools/libxl/libxl_create.c 
> @@ -462,7 +462,7 @@ 
>      path = libxl__xs_libxl_path(gc, domid); 
>      path = libxl__sprintf(gc, "%s/dm-version", path); 
>      return libxl__xs_write(gc, XBT_NULL, path, libxl__strdup(gc, 
> -     
> libxl_device_model_version_to_string(dm_info->device_model_version))); 
> +     
> libxl_device_model_version_to_string(dm_info->device_model_version)),"%s"); 
> } 
> 
> static int do_domain_create(libxl__gc *gc, libxl_domain_config *d_config, 
> 
> 
> --- /usr/src/xen-unstable.hg-rev-24341-460gtx/tools/libxl/libxl_device.c 
> +++ /usr/src/xen-unstable.hg-rev-24341-460gtx/tools/libxl/libxl_device.c 
> @@ -516,7 +516,7 @@ 
>          for (j = 0; j < num_devs; j++) { 
>              path = libxl__sprintf(gc, 
> "/local/domain/%d/device/%s/%s/backend", 
>                                    domid, kinds[i], devs[j]); 
> -            path = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, path)); 
> +            path = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, 
> path,"%s")); 
>              if (path && libxl__parse_backend_path(gc, path, &dev) == 0) { 
>                  dev.domid = domid; 
>                  dev.kind = kind; 
> 
> and an due to an argument missing: 
> 
> --- /usr/src/xen-unstable.hg-rev-24341-460gtx/tools/libxl/libxl_dom.c 
> +++ /usr/src/xen-unstable.hg-rev-24341-460gtx/tools/libxl/libxl_dom.c 
> @@ -625,7 +625,7 @@ 
>          break; 
>      } 
>      case LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN: 
> -        fd2 = open(filename, O_WRONLY | O_CREAT | O_TRUNC); 
> +        fd2 = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0644); 
>          if (fd2 < 0) { 
>              LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, 
>                               "Unable to create a QEMU save file\n"); 
> 
> As far as I know those doesn't break anything, but dont take too seriously, 
> i'm not an experienced developer :) 
> 
> 
> Forgot 2: 
> Since I'm using an ubuntu kernel, the xen support is not integrated, but 
> you need to add xen modules at your inittrd file. I did this by adding 
> those: 
> 
> xen-pciback passthrough=1 
> xen-blkback 
> xenfs 
> xen-netback 
> pci-stub 
> 
> to /etc/xen/initramfs-tools/modules and the issuing update-initramfs. 
> 
> In the future, I'll try to boot a linux domU, right now I'm still smiling 
> cause I can fully wipe my Windows installation from the hard disk. And I'm 
> sure that in future Win7 will be supported too. 
> 
> Thanks again David and everyone, 
> Ivo 
> 
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> View this message in context: 
> http://xen.1045712.n5.nabble.com/Patches-for-VGA-Passthrough-XEN-4-2-unsta
> ble-tp4406265p5051880.html Sent from the Xen - Dev mailing list archive at 
> Nabble.com. 
> 
> _______________________________________________ 
> Xen-devel mailing list 
> [hidden email] 
> http://lists.xensource.com/xen-devel

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